<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
下单成功啦！去支付吧
<form method="post" id="form1" action="/pay">
    <input type="hidden" name="orderNo" th:value="${orderNo}">
    <button type="submit">付款</button>
</form>
</body>
</html>